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DragonFly users List (threaded) for 2012-07
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Re: Unable to mount hammer file system Undo failed

From: Wojciech Puchar <wojtek@xxxxxxxxxxxxxxxxxxxxxxx>
Date: Thu, 19 Jul 2012 16:08:36 +0200 (CEST)

>> you may postpone fsck when using softupdates. It is clearly stated in 
>> softupdate documents you may find (McKusick was one of the authors).
>> that's what i do.
> Then, you suffer a performance hit when fsck'ing in bg.
once again - read more carefully :)

I am NOT talking about background fsck which is implemented in FreeBSD and 
i turn this off.

I am talking about just not doing fsck of every filesystem after crash. 
And doing it within same day but when pause is not a problem.

This is legitimate method with UFS+softupdates.

>> as someone proposed doing tests with writing random disk blocks, i would 
>> rather write make a program that would flip random memory bit every few 
>> minutes.
> If you're assuming that even the computer itself ain't reliable, how the hell

Assuming hardware never fails is certainly wrong

> could any FS be trustworthy then ??? IMHO, that's nonsense.
No it isn't. Sorry if i wasn't clear enough to explain it.

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